, vice president joe biden will take the stage and face his gop challenger, congressman paul ryan, and a 90-minute debate. until then, c-span will take you behind the scenes for a look at the process and also the politics of the 2012 vice- presidential debate. our phone lines will be open and you can see the phone numbers on your screen right now. we are asking whether or not the vice-presidential debate affects your vote in november. you can also answered this question on facebook. lots of people are already offering their opinion, so join the conversation there. we'll be here for 90 minutes of the two hours, and then something special you see on this network that you will see nowhere else on television. we will see all the preparations and get a real behind-the-scenes labor. someone who knows about all the behind-the-scenes is joining us tonight. he's the gop co-chairman of the presidential debate commission and has been in that role since the commission was founded in 1987. thanks for being here. so many questions i want to ask you. let's just start with centre college itself.